Re: mdadm raid1 stops to work after kernel panic

[Neil Brown <neilb@xxxxxxx>]

On Monday May 5, undicizeri@xxxxxxxxx wrote:
> >  What happens if you:
> >   mdadm -S /dev/md2
> >   mdadm -A /dev/md2 /dev/sda1 /dev/sdc1
> 
> root@persifae:~#mdadm -S /dev/md2
> mdadm: stopped /dev/md2
> root@persifae:~#mdadm -A /dev/md2 /dev/sda1 /dev/sdc1
> mdadm: failed to add /dev/sdc1 to /dev/md2: Invalid argument
> mdadm: /dev/md2 assembled from 0 drives - not enough to start the array.

Ahhh... They have a different "preferred minor".  Presumably when you
tried to boot with the wrong grub parameters it tried to assemble the
array as /dev/md0 instead of /dev/md2.

You can fix with:

  mdadm -A /dev/md2 /dev/sdc1
  mdadm /dev/md2 -a /dev/sda1

NeilBrown
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